I keep various pets and livestock, and for electric fencing, I prefer aluminum wire, it doesnt rust and takes the expanding/contracting better than the galvanized wire. The galvanized is considerably cheaper, but doesnt hold up as long. Every animal even in the same species, will have different habits with the fence, I have dogs that have only ever seen others get "bit", and some that hit it semi regularly. One of my horses stands about 6 inches from it and flares his nostrils ( ive been told they can smell the electricity) before he attempts to reach across it. My mule avoids ANYTHING with small flapping pieces, im assuming because of the ribbon I tie to the fence. BUT, with all my animals, large and small, the electric fence corals them all!